Finding the Fourth Proportional to 218,331,344.88, 301,261,691.88 and 129,010,860
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Solution
The fourth proportional to 218,331,344.88, 301,261,691.88 and 129,010,860 is: 178,013,972.18
Step by Step Solution
- Step 1: Write the proportion equation
218,331,344.88 : 301,261,691.88 = 129,010,860 : x - Step 2: Convert to fraction form
218,331,344.88/301,261,691.88 = 129,010,860/x - Step 3: Cross multiply
218,331,344.88x = 301,261,691.88 × 129,010,860 - Step 4: Simplify right side
218,331,344.88x = 38,866,029,954,493,816 - Step 5: Solve for x
x = 38,866,029,954,493,816/218,331,344.88 - Step 6: Final answer
x = 178,013,972.18
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.